Question

measurements can be estimated by using approximate references such as your body or common objects. complete the chart: personal reference measurement your outstretched hand the width of your baby finger the length of your arm your height capacity of a small carton of milk capacity of a large bottle of pop example jerry’s outstretched hand is 20 cm. he uses his hand to estimate the length of this piece of paper. number of jerry’s hands: 1 1/2 estimated length of paper: 1.5 x 20cm = 30cm actual length: 28 cm practice complete the following chart: item to be measured personal reference estimate measurement height of classroom length of classroom thickness of a loonie capacity of a pop can

Explanation:

Step1: Estimate measurements

• Your outstretched hand: Approximately 20 cm.
• The width of your baby - finger: About 1 cm.
• The length of your arm: Roughly 60 cm.
• Your height: Around 160 - 180 cm (average for an adult).
• Capacity of a small carton of milk: Usually about 250 mL.
• Capacity of a large bottle of pop: Typically around 2 L.
• For height of classroom, personal reference could be your height. Estimate: 3 times your height (if your height is 160 cm, estimate is 480 cm). Measurement: Around 300 - 350 cm in a typical classroom.
• For length of classroom, personal reference could be your out - stretched hand. If your out - stretched hand is 20 cm and you estimate it takes 50 hands, estimate is 1000 cm. Measurement: Around 800 - 1000 cm.
• For thickness of a loonie, personal reference could be the width of your baby - finger. Estimate: 1 cm (actual is about 1.95 mm but using the reference it's an estimate). Measurement: About 2 mm.
• For capacity of a pop can, personal reference could be the small carton of milk. Estimate: Similar to small carton of milk, so 250 mL. Measurement: Usually around 355 mL.

Answer:

Personal Reference	Measurement
The width of your baby finger	1 cm
The length of your arm	60 cm
Your height	160 - 180 cm
Capacity of a small carton of milk	250 mL
Capacity of a large bottle of pop	2 L
Item to be measured	Personal Reference	Estimate	Measurement
Height of classroom	Your height	480 cm (example based on 160 - cm height)	300 - 350 cm
Length of classroom	Your out - stretched hand	1000 cm (example)	800 - 1000 cm
Thickness of a loonie	The width of your baby finger	1 cm	2 mm
Capacity of a pop can	Capacity of a small carton of milk	250 mL	355 mL